http://www-formal.stanford.edu/jmc/progress/ideology.html Ideology and Sustainability: “For many, prophesying doom if we don’t change our ways, is a signal of virtue.” Part of a set of pages on progress and sustainability. (The author is, on this issue, pleased to be an “extreme optimist,” which is “a person who believes his country will probably survive even if it doesn’t take his advice.”) 20:31